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Submission #734004

# Submission time Handle Problem Language Result Execution time Memory
734004 2023-05-01T13:18:55 Z benjaminkleyn Distributing Candies (IOI21_candies) C++17
0 / 100
 441 ms 25112 KB 
#include "candies.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

ll M[1000000] = {0}, m[1000000] = {0}, lazy[1000000] = {0};

void push(int v)
{
    M[2 * v] += lazy[v];
    M[2 * v + 1] += lazy[v];

    m[2 * v] += lazy[v];
    m[2 * v + 1] += lazy[v];

    lazy[2 * v] += lazy[v];
    lazy[2 * v + 1] += lazy[v];
    lazy[v] = 0;
}

void update(int v, int tl, int tr, int l, int r, ll dx)
{
    if (r < tl || tr < l)
        return;
    if (l <= tl && tr <= r)
    {
        M[v] += dx;
        m[v] += dx;
        lazy[v] += dx;
        return;
    }

    push(v);
    int tm = (tl + tr) / 2;
    update(2 * v, tl, tm, l, r, dx);
    update(2 * v + 1, tm + 1, tr, l, r, dx);
    M[v] = max(M[2 * v], M[2 * v + 1]);
    m[v] = min(m[2 * v], m[2 * v + 1]);
}

ll Find(int v, int tl, int tr, ll Mx, ll Mn, int c)
{
    if (tl == tr)
        return tl;
    push(v);
    int tm = (tl + tr) / 2;
    if (max(Mx, M[2 * v + 1]) - min(Mn, m[2 * v + 1]) <= c)
        return Find(2 * v, tl, tm, max(Mx, M[2 * v + 1]), min(Mn, m[2 * v + 1]), c);
    return Find(2 * v + 1, tm + 1, tr, Mx, Mn, c);
}

ll Max(int v, int tl, int tr, int l, int r)
{
    if (r < tl || tr < l)
        return LLONG_MIN;
    if (l <= tl && tr <= r)
        return M[v];

    push(v);
    int tm = (tl + tr) / 2;
    return max(
        Max(2 * v, tl, tm, l, r),
        Max(2 * v + 1, tm + 1, tr, l, r)
    );
}

ll Min(int v, int tl, int tr, int l, int r)
{
    if (r < tl || tr < l)
        return LLONG_MAX;
    if (l <= tl && tr <= r)
        return m[v];

    push(v);
    int tm = (tl + tr) / 2;
    return min(
        Min(2 * v, tl, tm, l, r),
        Min(2 * v + 1, tm + 1, tr, l, r)
    );
}

struct Event
{
    int idx, val, time;
};
bool operator<(const Event &A, const Event &B)
{
    return A.idx < B.idx;
}

vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v) 
{
    int n = c.size(), q = v.size();

    vector<Event> events;
    events.push_back({-2, 1000000000, -2});
    events.push_back({-1, -1000000000, -1});
    for (int i = 0; i < q; i++)
    {
        events.push_back({l[i], v[i], i});
        events.push_back({r[i] + 1, -v[i], i});
    }
    sort(events.begin(), events.end());
    vector<int> s(n);
    int j = 0, sum = 0;
    for (int i = 0; i < n; i++)
    {
        while (j < events.size() && events[j].idx <= i)
        {
            sum += events[j].val;
            update(1, 0, q + 1, events[j].time + 2, q + 1, events[j].val);
            j++;
        }
        int idx = Find(1, 0, q + 1, sum, sum, c[i]);

        if (Max(1, 0, q + 1, idx + 1, q + 1) <= Max(1, 0, q + 1, idx, idx))
            s[i] = Max(1, 0, q + 1, q + 1, q + 1) - Min(1, 0, q + 1, idx + 1, q + 1);
        else
            s[i] = c[i] - (Max(1, 0, q + 1, idx + 1, q + 1) - Max(1, 0, q + 1, q + 1, q + 1));
    }

    return s;
}

Compilation message

candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:108:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |         while (j < events.size() && events[j].idx <= i)
      |                ~~^~~~~~~~~~~~~~~

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 441 ms 25108 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Incorrect 301 ms 22940 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 133 ms 22892 KB Output is correct
4 Correct 151 ms 3792 KB Output is correct
5 Correct 365 ms 25052 KB Output is correct
6 Correct 389 ms 25112 KB Output is correct
7 Incorrect 273 ms 25104 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -